H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/005 (2006.01) H04B 7/04 (2006.01) H04B 7/06 (2006.01) H04Q 7/36 (2006.01) H04Q 7/30 (2006.01)
Patent
CA 2290406
Base station 11 transmits downlink signal A to mobile station 12A with wide directivity and transmits downlink signal B to mobile station 12B with narrow directivity with an overlap with downlink signal A. Despreader 104 of mobile station 128 measures the reception power of downlink signal A and despreader 105 measures the reception power of downlink signal B. The respective reception power measurement results are carried on uplink signal B by frame assembly section 106 and reported to base station 11. Base station 11 determines whether the directivity orientation is matched or not based on the transmission power ratio and reception power ratio and controls the directivity and transmission power of the transmission signal based on the result. Thus, base station 11 precisely determines whether the transmission power and directivity of downlink signal H are accurate or not and modifies the transmission power and directivity.
Une station de base (11) transmet à une station mobile (12A) un signal ayant une directivité faible et, à une autre station mobile (12B), un signal (B) ayant une directivité forte, qui recouvre le signal (A). Au niveau de la station mobile (12B), la puissance reçue du signal (A) est mesurée par un désétaleur (104), tandis que la puissance reçue du signal (B) est mesurée par un autre désétaleur (105). Les résultats des mesures de puissance sont envoyés, en même temps qu'un signal (B) provenant d'un ensemble trame (106), à la station de base (11). Celle-ci évalue la correspondance de la directivité à partir du rapport de puissance émis et du rapport de puissance reçu, et commande la directivité et la puissance d'émission des signaux en se basant sur les résultats de l'évaluation. La station de base (11) peut ainsi réguler de manière appropriée les conditions de transmission d'un signal (B).
Matsushita Electric Industrial Co. Ltd.
Osler Hoskin & Harcourt Llp
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